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Spatial and temporal variability of fecal indicator bacteria in an urban stream under different meteorological regimes 게시글의 제목, 학술지명, 저자, 발행일, 작성내용을 보여줌
Spatial and temporal variability of fecal indicator bacteria in an urban stream under different meteorological regimes
학술지명 Water Science and Technology 저자 Kyung Hwa Cho,Joon Ha Kim,이승윤,Sung Min Cha,Yong Eun Park,Seong Won Lee
발표일 2010-06-13

As a representative urban stream in Korea, the Gwangju (GJ) stream suffers from chronic fecal contamination. In this study, to characterize levels of fecal pollution in the GJ stream, the monthly monitoring data for seven years (from 2001 to 2007) and the hourly monitoring data from two field experiments were examined with respect to seasonal/daily variations and spatial distribution under wet and dry weather conditions. This research revealed that concentrations of fecal indicator bacteria strongly varied depending on the prevalent meteorological conditions. That is, during the dry daytime, fecal indicator bacteria concentrations decreased due to inactivation from solar irradiation, but rapidly increased in the absence of sunlight, suggesting external source inputs. In addition, bacterial concentrations substantially increased during rainfall events, due probably to a major contribution from combined sewer overflow. The observations in this study can be useful for implementing fecal pollution management strategies and for predicting fecal contamination as a function of meteorological conditions.

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